HomeMy WebLinkAbout1.09 Floodplain SUP Staff Report 12-04-92PROJECT INFORMATION AND STAFF COMMENTS
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BOCC l2lt4t92
Floodplain Special Use Per¡nit to allow for
the Replating of l0 lots within Ranch at
Roaring Fork, Phase IV, Filing III.
John B. Elder
Located in Sections 25 pnd 361, T7S' R881V
of the 6th P.M.
Approximately l6.E acres in size.
Originally proposed for tZ lots, replat
request ¡educes filing to l0 lots.
Central Water
Central Sewer
PID
A/R/RD
REQIIEST:
APPLICANT:
LOCATfON:
SITEDATA:
\ilATFR:
SEWER:
EXTSTTNG ZONTNG:
ADJACENTZONING:
A
I. RELATIONSHIPTO THE COMPREHENSIVF. PLAI{
The subject property is located in District A - Carbondale Urban Area oflnfluence, and
District F - River/Floodplain Severe Envirorunental Constraints ¿s designated on the
Comprehensive Plan Ma.nagement District's Map.
II. DESCRIPTION OF THE PROPOSAL
site rìescription: The Ranch at Roaring Fork is located approximately one (l)
mileeast oftheTown of Carbondale, with all residential developmgt located
south of State Highway 82. A vicinity map is attached on page Ð
B.Develonment Proposal: Phase IV, Filing III of the Ranch at Roaring Fork is
located at the northwest corner of the development, and was originally platted
in 1978. The original subdivision design called for l7 single fa.rnily dwelling
units. The orþinal configuration of this portion of the P/D is shown on the
attached bulueline. Since the time of the original platting, a portion ofthe land
vvithin Phase IV, Filing III was identified as jurisdictional wetlands, hence
making development of the original design di[Iicult. Thgportion of the property
that includes delineated wetlands is shown on page{:.
I
C.
The applicant proposes to [ill areas of wettands and undertake compensatory
merlsures consistent with lhe approved 404 permit (discussed fully below). The
fill will result in a shilling of the floodfringe line towards thb Roaring Fork
River. The revised lloodfringe line is shown on the attached blueline zubmitted
by the applicant. FEMA only requires notihcation for amendments to the
Iloodway line, which is not modihed by this proposal.
Garfield Countl Floodplain Regulations. Dan Cokely, EIT with Scbmueser
Gorrlon Meyer, deternúned in a Nover¡rber 11, 1992 lettþr that a majority of the
property lies ùitlún the 100-year floodplain boundary of the Roaring Fork
River. The locatïon of the existing and revised lloodplain line is shown og¡lhe
attached blueli4e. Mr. Cokely's ll-ll-gzletter is aitched on page?:|[-.
Section6.08.0l'requiresthatany development in theflooOt¡"io rtt"U f"required
to obtain a Special Use Permit. The following specilic iósues must be addressed
within this prÕcess:
l.)To ensure that all necessary permits have been received from those
governmental agencies from which approval is required by federal or
state law, including Section 404 of the Federal V/ater Pollution Control
Act, Amendrnenls o11972, U.S.C. 13¿14;
2.') To determine whether proposed building sites will be reasonably safe
from Ilooding and that the structure will be in compliance with the
applicable provisions fior ueoo and standards ofconsliuction set forth in
the Zoning Resolution;
3.) Todetermineifthe proposaldevelopmentislocatedinthefloodway. If
located in the floodway, assure that encroachment provisions of Section
6.09.0I(IXA) are met;
4.) To âssure that adjacent communil.ies, lhe Colorado ïtraterConservation
Board and Federal Emergency Management Agency have ben notilïed
of the proposed watercourse alteration or relocation; and
To assure lhat the carrying capacity of the altered/relocated watercourse
is maintained.
UI. MAJOR ISSUES AND CONCERNS
Necessary Permils: Mr. Elder has obtained the required 404 Permit datcd
March 1 0, 1992 for the placemenl of hll in the floodplain. The perrrit allows for
the applicant to discharge 2,300 cubic yards ofclean fill into 0.36 acres of
wetland. Compensation will consist of a tree and shrub buffer of 0.48 acrc
plunl.etl ¿t the rt¿r of lot llnes of the l0 proposetl lots, to uorupeusåtë fur 0.16
acre of wetland fill at a ratio of 3 to I . Compensatory mitigation will also take
place near the Roaring Fork River. The applicant will create 0.30 acre of
emergentwetland inanexisting low Ilow irrigation channel about 900feet from
the fill site. The wetland creation will compensate for the remaining 0.2 acrc of
wetland hll at a ratio of I .5 to l. fþe location of the proposed wetland fill and
$itigal.ion is shown on p"g"S¡. Lcopy of fhe 404 permits, including
condiúons, is atrached o" p"g.r@, lU .
s.)
2
2.Buildingsites. The applicant has submitted documentation regarding building
envelopes for the l0 replated lots. None of these building envelopes are located
within the floodway. It appears that the potential exists for thêsb envelopes to
encroach into the revised llood fringe area. Garñeld County requires that the
foundation of each of these structures be hlled at an elevation of at least I (one)
foot above the 100-year floodplain.
Floodway Encroachment. As indicated on the replat, the floodway crosses a
portion of lots 6,7, arrd 8. The placement of lill does.not encroach on the
floodway, therefore, the applicant's engineer does not anticipate that the fill will
adversely affect the efliciency ofor restrict the flow capacity ofthe deslgnated
floodplain so as to cause darnage to others.
4.FF.MA-and Local Jurisdictions. FEMA does not require.riotiftcatíon for fill or
other activities outside of the floodway line. Therefore, no notificalion or
adminisl.rative proçesses arenecessary. The applicant's éngineer has concluded
that there will be no changes to the watercourse during a 100-year flood event.
I]¿^ REPT.ATÍNGREQUTRFMF.NTS
The Floodplain Special Use Permit is a prerequisite to reptating, tbis portion of the
Ranch. The applicant has submitted the following informatioú in support of the
replating request:
l.) Engineering Report on wast6 ïvater treatment capability to serve the 10 lots;
2., Engineering Report on domestic water
The documents conhrm that the subject lols are included in and are a part of all
engineering calculations for domestic water and wastewater treatrnent. The proposal
will reduce total lots connected to the water and wastewater system by 7 lots, as
originally conceived.
One issue not yet resolved is the need for a revised Subdivision Agreement to add¡ess
necessary improvements. The original agreemeot, entered into on September 25,1978,
called for the County to hold lot #59 as security for improvements. The replat proposal
eliminates Lot 59. A new agreement will need to be hnalized, and include the
appropriate security to ensure completion. Staff also recommends that the proposed
fill be included within the agreement.
]L SUGGF.STED FINNIN(ìS
3
I That proper publication and public notice was provided as required by law for
the hearing before the Board of County Commissioners.
That the hearing before the Boardof County Commissioners wasextensive and
complete, that all perl.inent facts, matters and issues were submitted and that all
interested parties were heard at the hearing.
That the application is in compliance with the Garlield County Zoldtrrg
Resotution of 1978, as amended.
Í
2.
3.
3
4.For the above sLated and other reasons, the proposed use is in the best interest
of the health, safet¡ morals, convenience, order, prosperity and welfa¡e of the
citizene of Garfield County. ' 't
V. REEOMMF.NDATTON
Staff recornmends approval of the Special Use Permit based on the. foltowing conditions:
l.All representations of l.heapplicant, eitherwithin theapplication orstatedatthepublic
hearing before the Board of County Commissioners, shall beconsidered conditions of
approval unless otherwise stated before the Board.
All required building permits will be obtained. Elevation certificates will be required
to ensure that all structures will be located at least one (l) foot above the floodplain line
indicated on the bluelinæ submitted with the application.
2.
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November 11,1992
I.],1.}'I¡ : IEL D COU¡JTY
Mr. Mark Bean. Director
Garfield County Building,
Sanitation and Plann¡ng D€partment
t 09 Eighth Street, Suite 303
Glenwood Springs, CO 81601
RE: Elder Property, Speclal Use Permit
Dear Mark:
Please let this letter serve ðs a final report supplementing the attached information for the
procur€ment ol a Special Use Permit for the Elder property at ths Ranch ãt Roar¡ng Fork.
From ths attach€d drawing, it was determ¡ned that a majority of the property lles ln the
Foderal Emergency Menagþm€nt Agency's l Oo-year flood boundary of the Roaring Fork Rlver.
Subsequently, Mr. John Elder has obtained permlssion lrom the Army Corps of Enginssrs to
lill to the boundary also shown in the drawing. This lill would push the proposod lloodplain
line further towards the river, thus, making the lots more developable.
Based upon the County Floodplain Regulations, Mr. Eldsr must obtain a Special Use Permit for
the placement of lill in the existing flood fringe. When obtaining a Special Use Permit, Sectlon
6.08.01 of the County Floodplain Begulations must bs addressed in regard to the following:
A. To assure that all necessary permits have been received lrom those
governmental agencies f¡om which approval is required by lederal or stat€ law,
including Sectíon 4Q4 ol ths Federal Water Pollution Control Act Amendmsnts
ol 1972, U.S.C. 1344; and
B.To determine whsther the proposed building sites w¡¡l be reasonably safs from
flooding, and that the structure will be in compliance with the applicable
provisions for uses and standards for construct¡on set forth in this rssolution.
ln response to Section 6.08.01, Mr. Elder has obtained ths required 404 Permit dated March
10, 1992, lrom the Army Corps of Engineers for the placement of fill in the floodplain. This
fill will be placed in accordance with the Corps' requiremsnts.
Secondly, the building sites will be filled to an elevation of at lEast one foot above the lO0-
year flood elevation., Therelore, åny structure that would be built would have a finishsd floor
at teast one foot above the lOO-year flood elevation.
:ln addition, we wouid like to address the items in Section 6.09.02 regarding building in the
flood fringe:
A. The placoment of l¡ll has been approved as stated above by the Army Corps of
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November 11,1992
M¡. Ma¡k Bean, Plannlng Þirector
Garfield County
Page 2
Ën-gineers. with proper pracement, this filr wiil not ¡ncreasa the opportunity forsolid debrls carried downstream by lloodwaters.
B. There wirr be no storags or processing of hazardous materiars on the property.
c. There will be no dísposal of garbago or sorid waste materials on the propsrty.
D. There will.be no mobile homes placed on the property.
E. The placement of fill does not encroach into the lloodway; therefore, w0 do notanticipate that the fill will adversely aflect the ef ficiency'"i
"ï iå"it¡"t the llowcapacity of the designated floodpiain so as to cause foreseoabrà damego toothers. t
we hope all of this information is complete. rf you have any questions or comments, pleasedo not hesitate to call.
Sincerely,
SCHMUESER GORDON MEYER. INC.
Dan Cokley, E.l.T.
DC:lc/92149
Enclosures
*$ç}IMUE$ER OORDON M¡YER, INC,.
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DEPARTMENT OF THE ABMY
u.s. ÂnMY ENGIIIEER DISTRICT, SACRAÍrlEilro
COBPS OF ENGINEERS
IT23 J STREET
sÂcRAilENIO, CALIFORNTA 95elil-2922
n8?lY 10aft¡flltof, oF
llarch 10, 1992
IleÉulaLorv Branch ( 1991012331
Mr. Jol¡n Elder
PosL Office lJox 18938
Ohlahon¡a City, Ohlahoma ?3154
Dear Mr. Elder:
I am respondinß to an applicatlon for Letter of PernissionILOPI dated Dece¡nber ll, 1991 submitted on your'behalf by Hr.
Dean Moffat,t. The appllcation for a LOP concerns thedevslsprns¡t of ten single fanily residential llots at the Ra,nshat tl¡e lloaringl Forlt ln Garfield County, Colorsdo. !
You are hereby uuthorized to digoharge 2,3OO eubio yards ofcleun fill inLo 0.36 acre of wetland locaLed near the RoarlngForh River, Section 36, Township ? Southr RanÉle 88 hlest, GarfieldCountyr Colorado, for the purpose of developing ten lots forresidential housing. l'hia proJect must be constructed in strictaccordance wítl¡ the p"opos"i outtined in Letter of Permiäsion/\pplicat,ion from Sundesigns Archit,ects dated Decemberr 1991rand amended by letters from Sundesigns Ârchltects dateú January29, 1992 a¡rd February 6, 1992. The proJeot drawings whlchreflect tl¡e most current amendnentg and which are authorized areare enclosed, and are entltled: 'ilocetion Hap'" lFigure Al,"vicinlty ltap" (Flgure Bl¡ "Propoedd Ptat. Modtfication" lFigurs\'-21 , "t and utitization Coneept,;' i'Ff gui; J l,r and "ProjectFeatures" (Figure .D¡ revised 2-6-921.
This LOP is issued under tl¡e authority of Section 40{ ofthe Clean Water ¡lct ( t3 USC 1344 I and ls subJect to the enclosedlist,¡¡ of special and Eenere¡l conditions. Please reed thecondLtlons cont,ained within thie autl¡orlzatlon carefully.
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We appreeiate your cooperagion. Sl¡ould you hal¡e any
questionsr please wríte to Nick Mezei, U.S. Army Corps of
Bngineers, Çacramento DisLrict, Western Colorado Regulatory
Office, 4O2 llood Âvenue, Room l42r Grond Junction, Colorado
815O1-2563, or belepho¡¡e (3O3) 243-1199.
BT AUTIIONITY OF TIIß SECRETAIìT OF TIIE ANMÏ:
Ârt Champ
Chief , ftegulabory Section
Enclosures
Copies Furnished:
Dr. Oe¡¡e tleef,z, Bnvironn¡ental Protection Agencyr 8tt¡M-SP
999 ßighteentlr Street, Suite 500, Denver, C.olorado 80202-2405
w/ Bnclosures ':
ltr. Lelloy Carlson, U.S. Fish and Wildlife Service' ?30 'Simms
SLreet, Number ?92, Goldenr Colorado 80401
Mr. Jor¡ Scl¡erscl¡IiÉht-401, Departnent of llealth, 42lO East 11t'h
Avenue, I)enver, Colorado 8O22OMr. Perry D. olson, Division of wtldlÍfe' 6060 Broadwayr Denvert
Colorado 8OZ l6
Mr. Hal D. Simpson, Deputy State Englneerr Colorado DivLsion of
Water Ilesources r 1313 Sl¡erman Street ¡ Roo¡n 818, Denver ¡Colorado 80203. Dean Moffatt, Sundesigns Ârcl¡ltects' 901 Blake Avenuet
Glensood Springs, Colorado .81601
¡r/ Enclosures
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Street r l)enver ¡ Colorado 80218 -i .;.;.-
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PERHIT NUMBETT:19S1012.33
pE¡MITTEE: l,tr. iolur Elder
l{^TERl{l\Y: @d County, C¡lorado
GENERAL CONDITIONS:
P
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The perrnlttee shall abide by all soecl,al condltl,ons (refer
age 5 ) wlrich the Corps of Englneera nay add to any lndlvldual
orl.zatlon given under thls LOP.
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Z. The permittee shall ablde by the terms and conditions of the
water quallty certification J.esued by the Colorado Department of
llealth or t,he Environmental Protection AÉency in accordance nlth
Sect,ion 401 of the Clean l{ater Act.
3. If you, before or durlng Prosesution of the authorl¿ed rdorh,
encounter a historJ.c property that has not been listed or
deternined eltgible for lieting on the Natlonal Reglsterr but
wl¡icl¡ may be eligíble for listlng ln the National ßegisterr you
shall i¡rmediately notlfy the corps of Engineers. 'r
4. Only clean materlal free of waste ¡¡etal productsr organic
materialsr unsightty debris, etc'r may be used for discharges
authorizad by tlris permit; all discharges ehall be free of ^toxlcpollutants in toxic ar¡ounts
5. Any dlacharges of dredged or fill naterlal shsll not occur.
in close proxi¡¡ity of a publlc rrater suPPly lntake¡ ahould not \ r
li¡nit the ability of any existlng.diverglon gtructure to . r.approprlate rrater and should not adversely lnPact a Btream.
Sau8ing statlon. r '1,.
6. You must. mai.ntain the actlviti authorlzed by thie Permit ln
good condltion and in conformance'wlth.'..the tarns and conditl'ons ''
ıt ttrt. pernlt. You are not relleved óf tht. regulrenent lf you
abandon the per¡rltted actl.vlty, although you nay rnake a Sood ' ,t.t ' \;t
folth transfer to a thlrd PsrLy. Should you wlsh to ceaee to.'"tl
¡ralntain the ¡uthorlsed.actlvlty or should you desire to abandon'
Lt wlthout a t¡ood fatth transferr vou ¡nust obtaln a uodlflcatlon
of your approval fro¡n the Corps of Englneere¡ rrhlch may require
regtoration of the arêa. ' :
7. Upon notlfication from the Corps of Engineerg that ¡tork
beint! lerforned does not cornply rrith or falt wtthin the ecope of
thls-pernlt, the responslble party shall take lnnedlate sùepsr as
direcled by thr: Corps of Englneers, to brlng the work lnto
conpllance witb this PerrnltD .
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8. Thls perrnit does not obvlate the need to obtaln otherFederal¡ state or loeal nut.horization as requlred by law, doesnoù grant any propert.y rights or exclusive privilegea¡ does riotauthorlze any lnJury to property or rights of others, and doesnot autÌ¡orize interference wlth any exlst,ing or proposed FederalproJecl. ,,t
9. In issulng this perrnit and in giving authorlzãdibn toperform work under this perrnit, the Federal Government does not
assume any llobillt,y for daroages to the pernitted proJect or u6egthereof as û reault of.current or future actlvltles undertaken byor on behalf of the Qnlted Stètes in the publlc LnteresÈ¡ danagesto persons, property, or to other pernitted or unperrnittedactlvitles or structr¡res caused .by the act,lvity.authorlzed bythls permitr deslgn or constructlon deficiencies assocLated wlththe permitÈed workr .or damage claims assoclated.wlth any futurenodificatlon, suspenslon, or r€vocÈtlon of thls pernlt.
lO. You ¡nust allof rcpresentatl.ves fron the Corps of Engineersto lnspect, tl¡e ai¡tiiorl,zed actl,vlty at any tirne dãe¡¡ed n.""esoryto ensure that it is betng or hae been acco¡rpllshed ln accordancexith the terns and conditions of this pernlt.
11. The consLructLon or operatl.on of the actlvlty'äuthorlzed bythls pernlt will not inrpair reserved tribal riÉhts, lnèludlng¡but not li¡¡lted to, reserved water rlghts and treatù flehlng andhuntlnÉ ridhts. ¡,
12, The Corps of Ëngineere ¡nay re-evaluate itB ieclsion on anyauthorlgation glverr ln accordance wlth thls per¡¡lt'at any tfunetl¡e clrcus¡stances warrsnt. Circunstances that, coúld requlre are-evaluation.lnglude¡ but are not lt¡rlted tor the:followlng:
a. ïou fail to conply ulth the terms and condltlons of thls
trerni t ¡ i..b, The infornat,ion provided Þy you ln strpport of your
appllcation provea to havê.be'en, faleer-inconplete¡ orlnaccurate and; 1"': -'¡..','
c. Slgnificriht new lnfor¡raùlon surfac.es which the Corps of
Engineers did not conslder ln reochlng a decislon.
Such re-evaluation rnay result ln a deterulnatlon that lù lsapproprlate to use the suspension, nodification¡ and revocatlon
¡rrocedures contalned in Tttle 33, Code of Federal RegulatlonsrPart 325.? or enforcement procedurea'guch as those contalned.ln'Tile 33, Code of Federal Re6ulations, Parts 326.4 and 326.5. Thereferenced enforcement procedures provl.dc for the lssuance of snadminl,etratlve order reguirin6 you to com¡>ly wlth the tcrms andconditions of thls perroit and fpi the tntltatlon of legal actlon
r'rl¡ere approprlater. Tou wlll be requlred to pay for anycorrective measures ordered bv thË G.orps of EndlneerB, and lf you
fall to cornply wlth such a dlrècttvi, the Corps of Englneera ¡¡åy
ln certsln situations (¡uch as'th'ose'.Bpectfled ln litle 33¡ Code
. of Federatlons¡ Part 209.1?0) êcçonplieh the correctlve Dctsurcs
by contract or otherwise and- blll 'you for the .cost. , .. t !
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13. the tloe ltnit for conpleting the authorlzed ¡¡ork wlll be
three yeara fron tl¡e date that lndlvldual ,aPproval ls glven under
this pàr¡nit. If you flnd that !'ou need nore tl'me to complete the
authoilzed activlty, subrnlt your requegt, for a tlne extcnglon to
tl¡e corps or rngineåra for cónslderition at least one'Ëonth
before Llre expiration date for conpletlon. 'llnless thèfe ôre
clrcumstr¡nces reguirin6 eLt,her a ProDPt conPletion of the
autt¡orized ectivity or a re-evaluqtlon of thc public int'erest
declslon¡ tl¡e CorPs of En8lneer¡ rlll normally glve favorable
consf.der¡tlon to ã request for an cxtenslon of the.tlne llnlt.
14. Upon conpletlon oi th" authorlzcd work¡ you *tll'l lmoedlately
notify tlre Corps of Engineera ¿¡¡ w¡ltin8.
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SPECIAI, CONDITIONS
JOIIN DLDEN
199101233
el The permitt.ee sl¡all implement, tl¡e atÈsched wetland mitlgationplrrn. 'l'his plan is based.upon the originsl opplíoation datedDecenrber l99l and subsequerrts revl.síons daLed January 9, 1992antl January 29, t992.
bt Tl¡e wetland ¡nitigation construction shall be inítiatedconcurrent wiU¡ wetland fllling for construction of thesubdivlsion and completed prior to the explr¡rtlon of the permlt.
ol llighly visible construction fencing shatl be placed alonÉr thewetland perrnit boundary until resldenêes and,landscapeconsfruction is completed to prevent inadvert,enttyrfillinÉ and/orco¡¡struction inpaets le.g. dumping cif construcLion debris and/ordredßed m¡¡l,erialr' sLorage of construction maLerial-s¡, or vehicletravel lanes. l
dl ltestrictions shall be incorporated into t,he deed for each lotand parcel of Filing 3r Phase 4, Lots 4? tlÍrouEh 63, ltanch at thelloaring Forhr Garfleld County, Colorador to insuie f,h¡t currenta¡¡d all fubure ownerg of each lot, are Bware of the need ''to obtaina Deparf,ment of lhe Arroy perrnit to discharge fill ¡natenLal into"waters of the United States"r and ¡+etlsnds. The deed restrlctionsl¡ull disclose language that an¿. pefaon wl¡o knowLngly vLolatesgection 301 of the Clean Water Aot rnay be punished by a fine ofnoL less thar¡ $5,000 nor more than $50.1000 per day'of violation,ol_by imprisonment, for noù rnore t.lia,n $.yearsr or bo'th. Lotswhich co¡¡tai¡¡ wetlands witl¡in their legal boundaries shall alsoinclude that infor¡nation within the deeds fbr those lote.
e) The pernrittee shall insure that the wetland rnítigatlonremul.ns as weùIdnd for the life of the oornpleted. projeot,.
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MITICiITION PNOPOSÂL
'l'tre permítLee understands that oompensatLon for wetland acreaÉe
impacted by development and by the implenen[ation of ne&sures
desi€ned to ¡rrotect water quality withi¡¡ the project slte Le
requíred by Federal law a¡¡d curre¡rt U.S. Army, Corps of Englneere
LOP proceduree. 'l'he nitigation plan presented belo¡r provides for
ttre replucel¡enL of inpacted wetland wit[ e¡rhartcernent of existlng
wetland at a rabio of 3 to I a¡ld creation of wetland at a rstlo
of 1.5 i,o l.
Â. Description of Proposed Þtitigotion
'fhe permittee ie authorized to fill 0.36 acre of wetland as
part of a developnrent plan after slternatives.to. avold were found
imprlcticable. Alter¡ratives to ninimlze wetland Lmpacts resulted
i¡r Lhe eurrent" plan. Conpensation will consíst oftenhancenent
of 0.48 acre of existing wef,land adjacent to the develbped
housinÉ; tlris r.rill compensnte for O'16 acre of wetland fill at a
ratio of 3 to l. l{etland creation of 0.3 acre will co¡npensate
for the remainÍng 0.2 acre of wetland fill at a ratio of 1.6 to l.
1'he permittee will trgsume full responsibility of aseurinE
ùhat enl¡anced and created utetltrnds Bre constructed accordinÉ to
plan end achieve the stated goals. The goals of the proposed
¡¡itigaLion are twofold:
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1. To provide proùection of the :,exieting wetland and enhance
values to partly compensate for values and functions lost with
the fill activit,y. ..-: r,,.' ..
2. To compensate for the remainlng wetland.volues and funcÈions
lost by creatio¡r of new wet,land in a nearby waterway.
The wetland enho¡reement congists of a tree and shrub buffer
of O.48 acre planted at, tl¡e rear of lot lines of the 10
developed lots. The plantinÉ will include native n¿rrow leaf
cottonwoods, and ¡ed äsier dogwoods. The cottonwootls'will be
planLed on Z0-foot cenl,ers. The I gallon sltrubs will be planted
in betwee¡¡ tl¡e trees on 5-foot centers.
Com¡rensal,ory mlt,igation will talte place near tl¡e Eoaring
Forh River. 'Il¡e pernrittee will create 0.3 acre of emergent
wetland in a¡¡ existinÉ low flow lrrigel"ion clrannel about 900 feet
distant fro¡n {:he f ill site. The existinEl channel and ¡narginal
¡etland are currently supported by high groundwater table and
creelt and irrigation flows tl¡at are part of the ¡naster
irrigatiorr/fisl¡ing pond complex tl¡roug¡¡out the llanch at the
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lloari¡rl Forlt. The proposed wetland creation co¡rsists of adding
drop structures within the cl¡anne1 to maintain a higher water
tal¡le ab ad,iacetrt areas wl¡ere excavstion of existing eíde slopes
will result in establishment of llLboral shelves. The ElrelveswiII be plarrLecl wibh webland veÉetabion. The exoavated material
will be st,ored or¡ an upland diaposal eite elsewhere on the ranch.
'll¡e Lrar¡sihion slope from the llttoral areas to the uplands will
be gruded aL a 4 horizo¡rt,sl to I vertical slope.
lopsoil fron¡ Lhe rush-do¡nínated wetl¡nd to be impacted will
be mulched and spread evenly ln the excavated littoral areas.
I'hese areas will be planted with willow cuttings obtalned fromvarious locaLions on the llench. CuttinÉrs Ìrill be planted on 3foot ce¡¡l"ers. Addítio¡¡ally, red osler dogwoods l1 gallon
container stochl r.¡ill be planted on lo-foot qenters at the toe of
Ll¡e tra¡rsítion elope from t,l¡e littoral areas to the uplands. thetru¡rsitl.on zone it¡ielf will be planted wLt,h smootl¡'brome grass toprovide ground cover and minimize erosion. lhe seed.will beapplied at o rale of'12 to 16 pounds per acre.
l'he malnte¡¡ance of the wet,land enl¡uncement area wlll consistof ensuring that an 80% survival rate is achleved at the end oftl¡e second growing season. The naintenance, of Uhe wè,irlandcreaLion eree will conslet of ensurinÉ that a ?0* cover bydesirable wetla¡¡d species is atlained by the end of the secondgrowing serrsorr. No long-ùerm mal.ntenance should b.e reçuíied.
l'l¡e mo¡ritoring./evaluaLion plan conslsts of monitorLng thewetland enhanee¡nenb erea at six ¡nonths. and onå year afterplantlng and for two additional yeq.rs.,.ühereafLer. .The survlval
rate will be evaluated and plented spêcies that, l¡ave died will be
replaeed to meeL Ll¡e 80* criteria. 'fhe weùland creation nreawill also be monitored in tbe sa¡ne way, and replantlng will be
performed bo n¡eet tl¡e ?01ú criteria. An Ênnu6l ¡nonitorlng reportwill be subnritt,ed to ühe Corps of Engineers for thelr review and
cor¡rnte¡r b .
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CONSTNUC'TION STANDAITDS , .I
In order to ensure that wetland impacts are limited to the
lmnrediute oreo. of tlrr: wetland fill, and that adjocent r¡etland ls
¡¡oL advergely affectedr the permittee wlIl ensure that!
a. Equiprnent. operetors will be instructed by the pernittee to
prevent damage to the surrounding landscape.
b. Fencing or other obvious barrier r.rill be inslalled between
the perrnitted wetland area and adiacent wetland to asgure
proLecLion of non-permit'ted wetlande. Under no circumstances will
heavy equipmcnt þs. ¿llqwed in the unpermitted wetland area.
e. Under no circu¡nstances will waste ¡¡aterials of any kind be
dunrped or temporarily stored in unpermitted qeLlãnds.
d. Meosuree will be taken nl¡en necegsary and as needed to
elimin¡rte or ¡¡ininize any interference or disturbence to
wildlife.
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